:root{--res-primary:#834ec0;--res-primary-light:#f3efff;--res-text-dark:#111827;--res-text-gray:#737373;--res-border:#e3e3e3;--res-bg:#fafafa;--res-white:#fff}#materialRoot{background-color:var(--res-bg);width:100%;min-height:100vh;padding:60px 20px}.res-container{max-width:1300px;margin:0 auto}.res-hero{text-align:center;margin-bottom:50px}.res-hero-title{color:var(--res-text-dark);margin-bottom:12px;font-size:3rem;font-weight:600}.res-hero-subtitle{color:var(--res-text-gray);margin:0 auto;font-size:1.25rem}.res-accordion-wrapper{flex-direction:column;gap:24px;display:flex}.res-accordion{background:var(--res-white);border:1px solid var(--res-border);border-radius:12px;transition:all .3s;overflow:hidden}.res-accordion-header{cursor:pointer;-webkit-user-select:none;user-select:none;justify-content:space-between;align-items:center;padding:20px 24px;display:flex}.res-acc-left{align-items:center;gap:16px;display:flex}.res-acc-icon{background:#f2efff;border-radius:14px;justify-content:center;align-items:center;width:48px;height:48px;display:flex}.res-acc-text h2{color:#0f0a1e;margin:0 0 4px;font-size:18px;font-weight:600}.res-acc-text p{color:#6b7280;margin:0;font-size:1rem}.res-acc-toggle{color:#242424;border:1px solid var(--res-border);background-color:#fff;border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;width:32px;height:32px;font-size:14px;transition:transform .3s;display:flex}.res-accordion.active .res-acc-toggle{background-color:var(--res-primary);color:var(--res-white);transform:rotate(180deg)}.res-accordion-content{max-height:0;padding:0 24px;transition:max-height .4s ease-in-out,padding .4s ease-in-out;overflow:hidden}.res-accordion.active .res-accordion-content{border-top:2px solid color-mix(in srgb, var(--res-border) 50%, transparent);padding:24px}.res-grid{grid-template-columns:repeat(4,1fr);gap:20px;margin-top:10px;display:grid}.res-card{background:var(--res-white);border:1px solid var(--res-border);border-radius:10px;flex-direction:column;padding:16px;transition:box-shadow .2s,border-color .2s;display:flex}.res-card:hover{border-color:#d1d5db;box-shadow:0 10px 15px -3px #0000000d}.res-card-top{justify-content:space-between;align-items:flex-start;margin-bottom:8px;display:flex}.res-card-title{color:#0a0a0a;margin:0;font-size:15px;font-weight:600;line-height:1.3}.res-badge{background-color:var(--res-primary-light);text-transform:uppercase;letter-spacing:.5px;border-radius:12px;padding:2px 8px;font-size:12px;font-weight:600}.res-badge span{background:linear-gradient(90deg,#4946f7 -7.41%,#854df4 100%);-webkit-text-fill-color:transparent;-webkit-background-clip:text}.res-card-subtitle{color:var(--res-text-gray);flex-grow:1;margin:0 0 16px;font-size:13px}.res-download-btn{border:1px solid var(--res-border);width:100%;color:var(--res-text-dark);background:0 0;border-radius:8px;justify-content:center;align-items:center;gap:8px;padding:10px;font-size:14px;font-weight:500;text-decoration:none;transition:all .2s;display:flex}.res-download-btn:hover{background:var(--res-bg);color:var(--res-primary);border-color:var(--res-primary)}.res-lecture-card{aspect-ratio:16/9;border-radius:12px;text-decoration:none;transition:transform .3s;display:block;position:relative;overflow:hidden;box-shadow:0 4px 6px -1px #0000001a}.res-lecture-card:hover{transform:translateY(-4px);box-shadow:0 10px 15px -3px #0000001a}.res-lecture-img{object-fit:cover;width:100%;height:100%}.res-lecture-overlay{background:linear-gradient(#0000001a 0%,#0003 50%,#000c 100%);flex-direction:column;justify-content:flex-end;padding:16px;display:flex;position:absolute;top:0;bottom:0;left:0;right:0}.res-play-btn{color:#fff;background:red;border-radius:8px;justify-content:center;align-items:center;width:48px;height:32px;font-size:20px;display:flex;position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);box-shadow:0 4px 10px #0000004d}.res-play-btn i{margin-left:2px}.res-lecture-title{color:#fff;-webkit-line-clamp:2;-webkit-box-orient:vertical;margin:0 0 4px;font-size:14px;font-weight:600;line-height:1.3;display:-webkit-box;overflow:hidden}.res-lecture-subtitle{color:#fffc;margin:0;font-size:14px}@media (max-width:1024px){.res-grid{grid-template-columns:repeat(3,1fr)}}@media (max-width:768px){#materialRoot{padding:40px 16px}.res-hero-title{font-size:28px}.res-grid{grid-template-columns:repeat(2,1fr)}}@media (max-width:480px){.res-accordion-header{padding:16px}.res-acc-toggle{border-radius:50%;flex-shrink:0;width:32px;height:32px}.res-acc-left{flex-direction:column;align-items:flex-start;gap:8px}.res-acc-icon{border-radius:12px;width:40px;height:40px;font-size:16px}.res-acc-text h2{font-size:16px}.res-acc-text p{font-size:12px}.res-grid{grid-template-columns:1fr}}